<!--

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

        http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.

-->
<template>
  <div class="app-container">
    <el-button v-if="superUser" type="primary" icon="el-icon-plus" @click="handleCreateEnvironment">{{ $t('env.buttonNewEnv') }}</el-button>

    <el-row :gutter="24">
      <el-col :xs="{span: 24}" :sm="{span: 24}" :md="{span: 24}" :lg="{span: 24}" :xl="{span: 24}" style="margin-top:15px">
        <el-table
          v-loading="environmentListLoading"
          :key="environmentTableKey"
          :data="environmentList"
          border
          fit
          highlight-current-row
          style="width: 100%;">
          <el-table-column :label="$t('env.colHeadingEnv')" min-width="50px" align="center">
            <template slot-scope="scope">
              <router-link :to="'#'" class="link-type" @click.native="handleSetEnvironment(scope.row.environment)">
                <span>{{ scope.row.environment }}</span>
              </router-link>
            </template>
          </el-table-column>
          <el-table-column :label="$t('env.colHeadingServiceUrl')" align="center" min-width="100px">
            <template slot-scope="scope">
              <span>{{ scope.row.broker }}</span>
            </template>
          </el-table-column>
          <el-table-column v-if="superUser" :label="$t('table.actions')" align="center" class-name="small-padding fixed-width">
            <template slot-scope="scope">
              <el-button type="primary" size="mini" @click="handleUpdateEnvironment(scope.row)">{{ $t('table.edit') }}</el-button>
              <el-button size="mini" type="danger" @click="handleDeleteEnvironment(scope.row)">{{ $t('table.delete') }}</el-button>
            </template>
          </el-table-column>
        </el-table>
      </el-col>
    </el-row>

    <el-dialog :title="textMap[dialogStatus]" :visible.sync="dialogFormVisible" width="30%">
      <el-form ref="form" :rules="rules" :model="form" label-position="top">
        <el-form-item v-if="dialogStatus==='create'" :label="$t('env.newEnvNameLabel')" prop="environment">
          <el-input v-model="form.environment" :placeholder="$t('env.newEnvNamePlaceHolder')"/>
        </el-form-item>
        <el-form-item v-if="dialogStatus==='create'" :label="$t('env.newEnvServiceUrlLabel')" prop="broker">
          <el-input v-model="form.broker" :placeholder="$t('env.newEnvServiceUrlPlaceHolder')"/>
        </el-form-item>
        <el-form-item v-if="dialogStatus==='update'" :label="$t('env.updateEnvNameLabel')">
          <el-tag type="primary" size="medium">{{ form.environment }}</el-tag>
        </el-form-item>
        <el-form-item v-if="dialogStatus==='update'" :label="$t('env.updateEnvServiceUrlLabel')" prop="broker">
          <el-input v-model="form.broker" :placeholder="$t('env.updateEnvServiceUrlPlaceHolder')"/>
        </el-form-item>
        <el-form-item v-if="dialogStatus==='delete'">
          <h4>{{ $t('env.deleteEnvDialogText') }}</h4>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="handleOptions()">{{ $t('table.confirm') }}</el-button>
          <el-button @click="dialogFormVisible = false">{{ $t('table.cancel') }}</el-button>
        </el-form-item>
      </el-form>
    </el-dialog>
  </div>
</template>

<script>
import { putEnvironment, fetchEnvironments, deleteEnvironment, updateEnvironment } from '@/api/environments'
import { setEnvironment } from '@/utils/environment'
import store from '@/store'

export default {
  name: 'EnvironmentInfo',
  data() {
    return {
      environmentList: [],
      environmentTableKey: 0,
      environmentListLoading: false,
      textMap: {
        create: this.$i18n.t('env.newEnvDialogCaption'),
        delete: this.$i18n.t('env.deleteEnvDialogCaption'),
        update: this.$i18n.t('env.updateEnvDialogCaption')
      },
      dialogFormVisible: false,
      dialogStatus: '',
      form: {
        environment: '',
        broker: ''
      },
      temp: {
        'name': '',
        'broker': ''
      },
      superUser: false,
      roles: [],
      rules: {
        environment: [{ required: true, message: this.$i18n.t('env.envNameIsRequired'), trigger: 'blur' }],
        broker: [{ required: true, message: this.$i18n.t('env.serviceUrlIsRequired'), trigger: 'blur' }]
      }
    }
  },
  created() {
    this.getEnvironments()
    this.roles = store.getters && store.getters.roles
    if (this.roles.includes('super')) {
      this.superUser = true
    } else {
      this.superUser = false
    }
  },
  methods: {
    getEnvironments() {
      fetchEnvironments().then(response => {
        if (!response.data) return
        this.environmentList = []
        for (var i = 0; i < response.data.data.length; i++) {
          this.environmentList.push({
            'environment': response.data.data[i].name,
            'broker': response.data.data[i].broker
          })
        }
      })
    },
    handleCreateEnvironment() {
      this.form.environment = ''
      this.form.broker = ''
      this.dialogFormVisible = true
      this.dialogStatus = 'create'
    },
    handleDeleteEnvironment(row) {
      this.temp.name = row.environment
      this.temp.broker = row.broker
      this.dialogFormVisible = true
      this.dialogStatus = 'delete'
    },
    handleUpdateEnvironment(row) {
      this.form.environment = row.environment
      this.form.broker = row.broker
      this.dialogFormVisible = true
      this.dialogStatus = 'update'
    },
    handleOptions() {
      this.$refs['form'].validate((valid) => {
        if (valid) {
          switch (this.dialogStatus) {
            case 'create':
              this.createEnvironment()
              break
            case 'delete':
              this.deleteEnvironment()
              break
            case 'update':
              this.updateEnvironment()
              break
          }
        }
      })
    },
    createEnvironment() {
      const data = {
        'name': this.form.environment,
        'broker': this.form.broker
      }
      putEnvironment(data).then(response => {
        if (!response.data) return
        if (response.data.hasOwnProperty('error')) {
          this.$notify({
            title: 'error',
            message: response.data.error,
            type: 'error',
            duration: 2000
          })
          return
        }
        this.$notify({
          title: 'success',
          message: this.$i18n.t('env.addEnvSuccessNotification'),
          type: 'success',
          duration: 2000
        })
        this.dialogFormVisible = false
        this.getEnvironments()
      })
    },
    deleteEnvironment() {
      const data = {
        'name': this.temp.name,
        'broker': this.temp.broker
      }
      deleteEnvironment(data).then(response => {
        if (!response.data) return
        if (response.data.hasOwnProperty('error')) {
          this.$notify({
            title: 'error',
            message: response.data.error,
            type: 'error',
            duration: 2000
          })
          return
        }
        this.$notify({
          title: 'success',
          message: this.$i18n.t('env.deleteEnvSuccessNotification'),
          type: 'success',
          duration: 2000
        })
        this.getEnvironments()
        this.dialogFormVisible = false
      })
    },
    updateEnvironment() {
      const data = {
        'name': this.form.environment,
        'broker': this.form.broker
      }
      updateEnvironment(data).then(response => {
        if (!response.data) return
        if (response.data.hasOwnProperty('error')) {
          this.$notify({
            title: 'error',
            message: response.data.error,
            type: 'error',
            duration: 2000
          })
          return
        }
        this.$notify({
          title: 'success',
          message: this.$i18n.t('env.updateEnvSuccessNotification'),
          type: 'success',
          duration: 2000
        })
        this.getEnvironments()
        this.dialogFormVisible = false
      })
    },
    handleSetEnvironment(environment) {
      setEnvironment(environment)
      if (this.roles.includes('super')) {
        this.$router.push({ path: '/management/tenants' })
      } else {
        this.$router.push({ path: '/management/admin/tenants/tenantInfo' })
      }
    }
  }
}
</script>
